Paul McCartney acts like a teenager

Sir Paul McCartney and his girlfriend acted like "besotted teenagers" during a night out this week.

The 66-year-old musician and his 48-year-old partner Nancy Shevell stunned fellow guests at the London after-party for 'The Boat That Rocked' movie premiere on Monday (23.03.09) with their public displays of affection and frequent outings to the dancefloor.

At one point the couple gyrated to Rolling Stones classic 'Satisfaction'.

A source said: "Paul was having a great time. He was on brilliant form, mingling with party goers.

"Fans were asking for pictures and he was happily obliging and Nancy looked so loved-up and content."

Paul used the party to introduce Nancy - who he has reportedly been dating since November 2007 - to his friends and was delighted when they bonded quickly.

The source added to Britain's Daily Mirror newspaper: "As well as speaking to the movie cast, including Rhys Ifans and Bill Nighy, Paul made a big deal of introducing Nancy to his friends Twiggy and Kenneth Branagh.

"He looked quite nervous but soon they were laughing like old friends and the idea of a dinner party was mooted."

As well as winning over Paul's friends, American Nancy also has a fan in his youngest daughter.

Paul's ex-wife Heather Mills - who secured a £24.3 million pay out when she divorced The Beatles legend last March - recently praised Nancy for bonding with her and Paul's five-year-old daughter Beatrice.

She said: "I haven't actually met Nancy, but my daughter says she's wonderful. Paul's got great taste in women."